December 4th - On This Date - RN Submarine Service

1906	C14	Submarine HMS C14 laid down
1913	W2	Submarine HMS W2 laid down
1915	J3	Submarine HMS J3 launched
1916	M3	Submarine HMS M3 laid down
1941	Truculent	Submarine HMS Truculent laid down
1943	Talent	Submarine HMS Talent completed
1969	Revenge	Submarine HMS Revenge completed
1987	Victorious	Submarine HMS Victorious laid down
1918	HMCS CC-1	HMCS CC-1 paid off Halifax NS.
1939	HMS Salmon	The German submarine U-36 was torpedoed and sunk in the North Sea south-west of Kristiansand,Norway, by a torpedo from the British submarine HMS Salmon.
1941	HMS Trusty	HMS Trusty makes a torpedo attack on Italian torpedo boat Orsa west of Zakynthos island, Greece. All torpedoes missed.
1942	HMS Traveler	HMS Traveller sunk On 28th November HMS Traveller was carrying out a reconnaissance patrol of the coast of Taranto as part of operation Portcullis (an attack on Italian battleships in Taranto Harbour using chariots) The submarine did not return from the operation and was probably mined on or about 4th December.
1942	HMS Seraph	HMS Seraph fires 4 torpedoes against a convoy about 20 nautical miles west of Marettimo Island, Italy, missing the German transport ship Ankara.
1944	HMS Shalimar	HMS Shalimar sinks a Japanese sailing vessel with gunfire in the Strait of Malacca.
2009	HMS Trafalgar	Decommissioned. The first vessel of her class to be taken out of service. Trafalgar became the ninth decommissioned submarine to be stored in Plymouth while an ongoing MoD study decides how to dispose of them.